KR20170047312A - Stuffing and manufacturing method thereof - Google Patents

Abstract

A filler material (4) and a method of making the same are disclosed wherein the filler material (4) is formed from a microporous polymer and has branches (402) formed by dividing the stem (401) (401) structure. The filler (4) of the present invention can maintain the state of the dispersed filler without significant phenomenon such as bunching and entanglement even after washing a plurality of times.

Description

TECHNICAL FIELD [0001] The present invention relates to a filler and a method for manufacturing the same,

The present invention relates to stuffing materials, in particular fillers, and their preparation.

Natural warming materials, such as down, feather and other bulk animal hair, are frequently used as fillers and / or insulating materials in the fields of clothing, bedding products, sleeping bags and the like. At the same time, researchers in the field are constantly exploring a variety of synthetic materials for imitation fuzz and imitation feathers.

Commonly used fillers and / or heat insulating synthetic materials include fiber cluster type and fiber ball type. The fiber cluster-type material is typically formed by forming a fiber flocculus material into a fiber cluster by chopping and then grasping a given weight of fiber clusters for the filler to provide a filler and / . On the other hand, the fiber ball-type material preferentially causes the staple fibers to undergo opening picking and then, in a certain way, cause the fibers to wind one to the other, or the fibers to have a bonding point To form fiber balls.

For example, U.S. Patent No. 6,329,052 discloses a fluffy insulating material. According to the description in the patent, the fluffy thermal insulation material is a fiber that forms short fiber clusters after cutting And the fiber clusters may contain water repellent or silicone treated fibers, viscous fibers, or conventional dry fibers.

Chinese Patent Laid-Open No. 1966789 discloses a polyester fiber filler material, according to the description in the patent publication, polyester fiber filler is obtained by mixing ultrafine high-grade hollow polyester staple fiber with conventional hollow polyester staple fiber, Opening picking, mixing, and carding of the suede, followed by air blowing.

Chinese Patent Laid-Open No. 101166689 discloses a filler material, according to the description in the patent specification, the filler material is a double-ended, coated with a smoothing agent having an average size of 0.5 to 2.5 dtex, end crimped polyester fibers, the fibers are cut to have an average length of 4 to 15 mm, and then subjected to opening picking.

U.S. Patent No. 4618531 discloses a polyester fiber filler, according to the description in the patent, the polyester fiber filler has a fiber ball spirally and randomly wound.

Chinese Patent Publication No. 87107757 discloses polyester fiber wadding, according to the description in the patent publication, polyester fiber wadding is a spiral crimped poly (arylene terephthalate), which is arranged with binder fibers and forms a complexly entangled fiber ball. Ester fiber wing.

U.S. Patent No. 7261936B2 discloses a heat insulating material, according to the description in the patent, which has a structure similar to the shape in which it is blown, and which, similar to a "shuttlecock", is fused together at one end of the filaments, And a plurality of filaments that are opened in the openings.

Fiber clusters have a certain bulking intensity and condensability, but as a result of the considerable amount of fibers being arranged isotropically in the fiber bundles, the fiber clusters after cutting inevitably contain significant amounts of extremely short fibers, The charged insulated material tends to leak, resulting in a decrease in the overall thickness after washing with water as well as a deterioration in the insulating performance.

The internal connections of the fiber balls are relatively weak, and the modified fiber ball structure can overcome this disadvantage and increase rebound elasticity and durability. However, the fiber ball can not overcome the disadvantage of water-washing performance after filling, and in particular, easy mutual entanglement of fibers after washing.

Similarly, the agly charged material is light in weight and soft in feel. However, similar filler materials have great difficulty in solving the problem of easy mutual entanglement and conglomeration of fibers after water washing in actual use, which severely limits the application of this type of permanently filled material.

Therefore, fiber agglomerates of various sizes formed after water washing are extremely difficult to re-disperse and their application in the field of clothing and the like will be affected, for example, Sensation and performance will be affected. Whether it is a bulk staple fiber, a fiber ball, or a fluffy ball, there remains a need to address the difficult problem of lumping after washing.

It is an object of the present invention to provide a filler which can be uniformly dispersed after washing with water, without significant phenomena such as filling and tangling with good water-washing performance.

It is an object of the present invention to provide a solution of the following, that is to say that as a filler, the filler comprises a branch and trunk structure formed from a microporous polymer and the branch and trunk structure is formed from a stem, Wherein the branch and stem structures are provided with a filler having a maximum longitudinal length of an average of about 10 to 130 mm and a maximum lateral dimension of an average of 2 to 15 mm, ≪ / RTI >

Optionally, the stem has an average lateral dimension of between 1 and 10 mm.

Optionally, the branches have an average lateral dimension of 0.5 to 5 mm.

Optionally, the stem length is less than the longitudinal length of the branch and stem structures.

Optionally, the branches have an average length of 1 to 6 mm.

Alternatively, the branches are formed by being laterally divided at an average distance of about 1 to 6 mm along the direction of the longitudinal length of the stem.

Optionally, the branches are formed by being split at one end of the stem.

Optionally, the branch and stem structures have a planar two-dimensional structure.

Optionally, the branch and stem structures have an average thickness of 0.25 to 2 mm.

Optionally, the microporous polymer is selected from insulating materials.

Alternatively, the insulating materials are expanded plastics.

Alternatively, the foamed plastics include those selected from the following materials: polyethylene, polyvinyl chloride, polystyrene or polyurethane.

Optionally, the filler has water-wash resistance.

Another object of the present invention is to provide a method for producing a filler.

This object of the present invention is achieved by the following technical solution, namely a pair of gear blade-bearing rolls provided with a microporous polymer sheet of thickness of 0.25 to 2 mm and rotating in opposite directions for cutting roller wheels, and the gap between the two gear blade-supporting roller wheels is adjusted to 0 to 1 mm to achieve cutting and shaping of the sheet into a branch and stem structure.

Optionally, the gear blade-supporting roller wheels have blades arranged at regular intervals along their axial lines and spirally distributed.

Optionally, the gear blade-supporting roller wheels have a linear velocity of about 100 to 300 mm / sec.

An advantage of the present invention is that a relatively simple method can be used to prepare fillers that can have good water-washing performance, and that the fillers of the present invention exhibit significant phenomena such as bunching and entanglement after multiple washes compared to conventional materials , The dispersed filler state can still be maintained.

Other features and advantages of the present invention will be further described in detail below in conjunction with specific examples of the accompanying drawings which are not drawn to scale and scale.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view of a method for producing a filler of an example of the present invention. FIG.
2 is a schematic view of a filler of an example of the present invention.
3 is a schematic view of a filler of another example of the present invention.
4 is a schematic view of a filler of another example of the present invention.

The present invention provides a filler and a method for producing the same. In particular, in one aspect, there is provided a filler comprising a branch and a stem structure formed from a microporous polymer, wherein the branch and stem structures comprise branches and branches formed by splitting from the stem, A maximum longitudinal strength of 10 to 130 mm, and a maximum lateral dimension of 1 to 10 mm on average. These branch and stem structures are basically given as a dendritic shape, and a plurality of branches are formed by being divided from the stem. The plurality of branches can be formed, for example, by being divided laterally at predetermined intervals along the direction of the longitudinal length of the stem, i.e. to one side or to both sides, for example at intervals of 1 to 6 mm on average, Planar branches and stem structures may be formed, having a plurality of longitudinally spaced branches. For example, a plurality of branches, schematically represented as shapes similar to E, F, or K shapes, are formed on the stem. Alternatively, two or more branches may be formed by being split at one or both ends of the stem. For example, a plurality of leaves, which are schematically represented by shapes similar to L, T, or Y shapes, are formed on a tree topop (treetop), and branch and stem structures are formed on one side or on both sides .

The branches can be divided from the stem at different angles, from a smaller acute angle, e.g., a Y or K shape, to an angle close to 90 degrees, i.e. E, F, L or T shapes. Without limitation, when the plurality of branches are formed by being laterally divided at predetermined intervals in the direction of the longitudinal length of the stem, the branches can be divided from the stem at a smaller angle, e.g., less than 30 degrees, Branches are formed by being divided at one end or both ends of the stem, the branches may be divided from the stem at a larger angle, e.g., an angle of more than 60 degrees.

The dimensions of the stems and branches can be varied differently. For example, the stem may have an average lateral dimension of 0.2 to 10 mm. Here, the lateral direction means a direction perpendicular to the longitudinal direction, instead of the restriction on the shape. For example, the cross-sections of stems and branches may have a rectangular, oblate, circular, elliptical or irregular shape, so the mean lateral dimension refers to the average length dimension across the cross section or the dimension on the larger side. For example, it may be the diameter or width of the cross section, or the average size of the irregular shape, or the maximum size across the cross section. Similarly, the branches optionally have an average lateral dimension of 0.1 to 5 mm.

The thickness of the sheet of microporous polymeric material used to form the filler will influence or determine the lateral dimensions of the stems and branches and the planar thickness of the branches and stem structures. Preferably, the branch and stem structures have an average thickness of 0.25 to 2 mm, depending on the thickness of the material, although there may be larger variations.

For length, the stem length may be less than the longitudinal length of the branch and stem structures. For example, with regard to the formation of branches by being divided at intervals along the direction of the longitudinal length of the stem, the stem length may preferably be less than the longitudinal length of the branches and stem structures, or, in other words, Do not exceed any end in the length direction of the stem. Alternatively, in one variant, some of the branches after protrusion may cross a predetermined end in the lengthwise direction of the stem, such that the longitudinal length of the branch and stem structures is greater than the stem length. The average length of the branches may be 1 to 6 mm, as described above, or may not exceed or exceed the predetermined end in the lengthwise direction of the stem. In another aspect, with respect to the formation of branches by being split at one end of the stem, the stem length is substantially smaller than the longitudinal length of the branch and stem structures. In any case, preferably the stem length and the maximum longitudinal length of the branch and stem structures are on average 10 to 130 mm. The width, i.e., the maximum lateral dimension, of the branch and stem structures is optionally 1 to 10 mm on average. Generally, the extent and angle of extension of the branches will affect such dimensions. In that way, these factors determine and limit the approximate dimensions of the branch and stem structures.

The filler of the present invention may be made of a microporous polymer, preferably a microporous polymer sheet, for example a sheet having a thickness of 0.25 to 2 mm. Alternatively, such microporous polymers are selected from a number of microporous polymers made of a heat insulating material, for example, certain foamed plastics. As an example instead of a limitation, it may be selected from polyethylene, polyvinyl chloride, polystyrene or polyurethane, or other foam materials made of suitable materials.

Optionally, the filler has water-wash resistance, i.e. it can basically maintain its original shape after water washing.

In another aspect, the present invention provides a method of making a filler, wherein a microporous polymer sheet having a thickness of 0.25 to 2 mm is provided and enters a pair of gear blade-support roller wheels rotating in opposite directions for cutting , Wherein the gap between the two gear blade-supporting roller wheels is adjusted to 0 to 1 mm to cut and shape the sheet into a branch and stem structure.

The microporous polymer sheet may generally be provided in the form of a coiled material, so that a work roll may be mounted on the coiled material to facilitate rotation. Thus, the coiled material enters into the pull rolls, pulling the coiled material into the gear blade-supporting roller wheels for cutting.

The gear blade-support roller wheels have blades that can have a variety of different shapes and distributions, cutting the sheet into branches and stem structures of different shapes. For example, a typical gear blade-supporting roller wheel has a plurality of toothed structures to facilitate spiral rotation, and the blades can be arranged in different manners, for example, each of the toothed structures has a blade at the top . In one example, the gear blade-support roller wheels have blades arranged spaced apart along their axial lines and distributed spirally and located on each of the toothed structures, respectively. The gear blade-support roller wheels may be selected from among available products.

The thickness of the material of the microporous polymer and the parameters of the gear blade-supporting roller wheels, such as the circumference, rotation speed or corresponding linear velocity of the gear blade-supporting roller wheels (i.e. the speed of the material of the forwardly driven microporous polymer sheet ), The gap between the two gear blade-supporting roller wheels, the blade shape, the spacing and the distribution mode, etc., the microporous polymer sheet can be cut into branches and stem structures of different shapes. For example, by rotating the gear blade-supporting roller wheels, it is possible to generate a corresponding linear velocity which can be between 100 and 300 mm / s, in other words, the gear blade-supporting roller wheels have a linear velocity of about 100 to 300 mm / , The clearance between the two gear blade-supporting roller wheels may be 0 to 1 mm.

Example 1

According to one embodiment of the present invention, the filler 4 and its manufacturing method can be achieved by the following modes. Referring to Fig. 1, in this embodiment, a foamed polyethylene material (EPE) made of a heat insulating material and a foamed plastic was selected as a microporous polymer. In this embodiment, a material having a thickness of 0.5 mm was selected and provided in the form of a wound coil-like material. According to the present invention, the work roll is first mounted on the microporous polymer sheet 1 to facilitate rotation, and then the sheet 1 is pulled into the pair of gear blade-supporting roller wheels 2, Wherein the pair of gear blade-supporting roller wheels 2 have a plurality of toothed structures each having a blade at the top, the blades being arranged at intervals along the axial line of the gear blade-supporting roller wheel 2, Respectively. The spacing between the two gear blade-supporting roller wheels 2 could be adjusted from 0 to 1 mm and was adjusted to 0.1 mm in this embodiment. The speed of the forwardly driven microporous polymer sheet 1 or the linear speed of the gear blade-supporting roller wheels 2 is preferably set at 210 mm / sec in the present invention, and in such a way, The blade-supporting roller wheels (2) cut the sheet (1) into a filler (4) having branches and stem structures. A storage bin (3) is provided at the lower end of the pair of gear blade-supporting roller wheels (2). An evacuation device (not shown) was provided in the reservoir 3, which was used to collect the filler 4 after machine molding at the top.

According to the present embodiment the formed filler 4 has a stem and stem structure comprising a plurality of branches 402 formed by dividing stem 401 and stem 401, And the branches 402 after protrusion do not extend beyond any end of the stem 401 in its longitudinal direction so that the length of the stem 401 is equal to the maximum longitudinal length of the branch and stem structures, The width or maximum lateral dimension of the branches 402 was determined by the degree of crossing of the branches 402. [ In this embodiment, the branch and stem structures have a maximum longitudinal length of an average of 10 to 60 mm and a maximum lateral dimension of an average of 2 to 5 mm, wherein the stem 401 has a length of about 10 to 60 mm and a length of 1 And the branches 402 had a length of 1 to 6 mm and a width of about 0.5 to 1.5 mm. A plurality of branches are formed at intervals along the length of the stem 401. For example, the average spacing between each branch 402 was between 1 and 6 mm. The length and width of the stem 401, the length and width of the branches 402 and the average spacing between each branch 402 are determined by the perimeter of the gear blade-supporting roller wheels 2, the rotational speed and the corresponding line speed, The distance between the blades, the distance between the two gear blades-support roller wheels 2, and the like.

Although the plurality of branches 402 in this embodiment all extended toward one end of the stem 401, apparently they could also each extend towards both ends of the stem.

In the embodiment as shown in Fig. 2, the branches 402 were divided from the stem 401 at a smaller angle, generally distributed within an angle of about 30 degrees or less.

In this embodiment, the microporous polymer sheet 1 was used to make the filler 4, and the filler 4 with the planar branches and the stem structure had a thickness of its branches and stem structures of 0.5 mm Is dependent on the thickness of the microporous polymer sheet (1). Also, in this embodiment, it is easy to understand that the thickness of both stems 401 and branches 402 is the thickness of the microporous polymer sheet 1, i.e., 0.5 mm.

In this embodiment, as a result of employing specific gear blade-supporting roller wheels 2 and specific process parameters, the cross-sections of stems 401 and branches 402 have been formed as rectangles. Of course, the cross-sections of stems 401 and branches 402 could also be easily cut by those skilled in the art as a circular, circular, elliptical or irregular shape with reference to the present invention.

According to the method of the present invention, as a result of its process and material characteristics, the specific shape and dimensions of the formed filler 4 have a predetermined distribution. For example, the lengths of the stems 401 and the branches 402 of the planar branches and stem structures, the split angle formed between them, and the like will have some variation and distribution ranges, (4) have a somewhat different specific shape and dimension. In such a manner, in a relatively appropriate mode, the maximum size, average size or predetermined range may be determined by various values of the branch and stem structures, such as the average value of the longitudinal length and the maximum lateral dimension of the branch and stem structures, 401 and the length and splitting angle of the branches 402, the spacing between each branch 402, and the like.

Example 2

According to another embodiment of the present invention, a filler 4 with a thickness of 2 mm could be made using the same foaming polyethylene material (EPE) as can be similarly shown in Figures 1 and 2 . First, the microporous polymer sheet 1 was mounted into a work roll, and then the sheet 1 was filled into a pair of gear blade-supporting roller wheels 2 by traction, wherein the two gear blade- The gap between the wheels 2 was adjusted to 0.5 mm in this embodiment and the microporous polymer sheet 1 was driven forward at a linear velocity set in this embodiment at 300 mm / The support roller wheels (2) cut and formed the sheet (1) into a filler (4) having branches and stem structures. A reservoir 3 is provided at the lower end of the gear blade-supporting roller wheels 2. A discharge device (not shown) was provided in the reservoir 3, which was used to collect the filler 4 after machine molding at the top.

In this embodiment, a filler 4 having branches and stem structures was formed, as shown in Figure 2, comprising a plurality of branches 402 formed by dividing stem 401 and stem 401 . However, the dimensions are such that the branch and stem structures have a maximum longitudinal length of an average of 10 to 40 mm and a maximum lateral dimension of an average of about 2 to 4 mm, and the stem 401 has a length of about 10 to 40 mm and a length of 1 To 2 mm in width and the branches 402 differed from the dimensions of the first embodiment of the present invention in that they had a length of 1 to 6 mm and a width of about 0.5 to 1 mm. A plurality of branches are formed at intervals along the length of the stem 401. For example, the average spacing between each branch 402 was between 1 and 6 mm. Similarly, the length and width of the stem 401, the length and width of the branches 402, and the average spacing between each branch 402 are determined around the periphery of the gear blade-supporting roller wheels 2, Spacing, spacing between the two gear blade-supporting roller wheels 2, and the like.

Example 3

According to another embodiment of the present invention, the filler 4 and its manufacturing method are as shown in Figs. 1 and 3. Fig. In this embodiment, a polyurethane material (PU) of plastic texture, which is a heat insulating material and similarly made of foam plastic, was selected as the microporous polymer sheet (1). In this embodiment, the selected material had a thickness of 2 mm. First, the microporous polymer sheet 1 was loaded into a working roll, and then the microporous polymer sheet 1 was charged into a pair of gear blade-supporting roller wheels 2 through traction, The support roller wheels 2 had a plurality of toothed structures each having a blade at the top and the blades were arranged at intervals along the axis of the gear blade-support roller wheel 2 and were spirally distributed. The distance between the two gear blade-supporting roller wheels 2 was adjusted to 0.2 mm in this embodiment, and the rotation speed was set at 150 mm / second. A reservoir 3 is provided at the lower end of the gear blade-supporting roller wheels 2. A discharge device (not shown) was provided in the reservoir 3, which was used to collect the filler 4 after machine molding at the top.

In this embodiment, as shown in Fig. 3, a filler 4 with branches and stem structures is formed, which includes branches 401 formed by being split at one end of stem 401 and stem 401, . The filler material 4 had a maximum longitudinal length of an average of 10 to 80 mm and a maximum lateral dimension of an average of 2 to 10 mm wherein the stem 401 had a length of about 10 to 80 mm and a length of 1 to 6 mm Directional width, the branches 402 having a length of 1 to 6 mm and a width of about 0.5 to 3 mm. One or more branches 402 could be formed by being split at one end of the stem 401. For example, the average spacing between each branch 402 was between 1 and 6 mm. Similarly, the length and width of the stem 401, the length and width of the branches 402, and the average spacing between each branch 402 are determined around the periphery of the gear blade-supporting roller wheels 2, Spacing, spacing between the two gear blade-supporting roller wheels 2, and the like.

Example 4

According to another embodiment of the present invention, the method for manufacturing the filler 4 is as shown in Figs. 1 and 4. Fig. In this example, a foamed polyethylene (EPE) material of plastic texture, which is a heat insulating material and likewise also made of foamed plastic, was selected as the microporous polymer sheet (1). In this embodiment, a material having a thickness of 0.25 mm was selected. First, the microporous polymer sheet 1 was loaded into a working roll, and then the microporous polymer sheet 1 was charged into a pair of gear blade-supporting roller wheels 2 through traction, The supporting roller wheels 2 had a plurality of toothed structures each having at least one blade on top, the blades being spaced apart along the axis of the gear blade-supporting roller wheel 2 and distributed spirally. The distance between the two gear blade-supporting roller wheels 2 was adjusted to 0.3 mm in this embodiment, and the rotation speed was set at 210 mm / second. A reservoir 3 is provided at the lower end of the gear blade-supporting roller wheels 2. A discharge device (not shown) was provided in the reservoir 3, which was used to collect the filler 4 after machine molding at the top.

In this embodiment, a filler 4 having branches and stem structures was formed, as shown in Figure 4, comprising a plurality of branches 402 formed by dividing stem 401 and stem 401 . A plurality of branches 402 extend each toward both ends of the stem 401 and some of the branches 402 may cross a predetermined end of the stem 401 in the lengthwise direction of the stem. The stem and stem structures have a maximum longitudinal length of an average of 10 to 130 mm and an average maximum lateral dimension of an average of about 5 to 15 mm and the stem 401 has a length of about 5 to 110 mm and a lateral length of 3 to 10 mm Widths, branches 402 having a length of 5 to 20 mm and a width of about 1.5 to 4 mm. A plurality of branches 402 are formed spaced apart along the length of the stem 401. For example, the average spacing between each branch 402 was between 1 and 6 mm. Similarly, the length and width of the stem 401, the length and width of the branches 402, and the average spacing between each branch 402 are determined around the periphery of the gear blade-supporting roller wheels 2, Spacing, spacing between the two gear blade-supporting roller wheels 2, and the like.

h의 대사 열 생성을 갖는) 가벼운 정신 노동에 관여되는 사람이 편안하게 느낄 때, 21℃의 실온, 50% 미만의 상대 습도, 및 0.1 m/s 이하의 풍속에서, 그 사람에 의해 착용된 의복의 열 저항 값이 1 Clo인 것으로서 표현된다.To determine the water-washing performance, the filler formed in Example 1 of the present invention was tested for its warming values before and after rinsing with water, and was observed for its uniformity. Thus, a 50 cm x 50 cm cloth packet employing a 190T blue nylon cloth was constructed, and 40 g of filler formed in Example 1 was uniformly distributed in a thousand packets to prepare a test sample packet. And the test was performed on the insulation values before and after the water washing. Here, the water wash was performed by 10 washes according to the GB / T8629-2001: 7A procedure and the isothermal test was performed according to Part C of ASTM 1868 to test the warm-keeping index, the Clo value . The value of the warming index Clo is either sitting still (209.2 KJ / m2

h at a room temperature of 21 ° C, a relative humidity of less than 50%, and a wind speed of less than 0.1 m / s when a person involved in mild mental labor feels comfortable, Lt; RTI ID = 0.0 > 1 Clo. ≪ / RTI >

The test results were as follows: The Clo value of the test sample packet was 2.4 before water washing, and the Clo value was 2.38 after 10 washings. The Clo retention after washing with water was as high as 99.1%. These results show that the water washing has little influence on the heat retaining performance of these materials and shows that the water washing does not significantly cause the bunching and tangling of the fillers which affect the fluctuation of the heat insulating performance. The uniformity was determined by the manner in which the sample packet was placed on a glass table with illumination and the distribution of filler material in the sample packet was determined by observing the overall color uniformity of the sample packet. A more uniform color represents a more uniform distribution of filler within the sample packet. In the opposite case, clustering and entangling are present. In another aspect, it was found by observation that the filler was taken out of the sample packet and the filler was in a state of single fibers both before and after the water wash, basically with little lump and significant variation.

According to the present invention, there is provided a filler and a method for producing the same, which obtain a filler of different shapes and dimensions. While certain shapes and dimensions can be varied, the branch and stem structures formed by the microporous polymers provide very good water-washing performance without entanglement or aggregation, can maintain and display the good state of the single fibers, It can remain in a uniformly dispersed state. When branch and stem structures are used as thermal insulation materials, they can maintain good thermal insulation performance.

Claims (16)

As stuffing,
Wherein the filler comprises a branch and trunk structure formed by a microporous polymer,
Wherein said branch and stem structure comprises a stem and branches formed by dividing said stem,
Characterized in that the branch and stem structures have a maximum longitudinal length of about 10 to 130 mm on average and a maximum lateral dimension of about 2 to 15 mm on average. The filler of claim 1, wherein the stem has an average lateral dimension of about 1 to 10 mm. 2. The filler of claim 1, wherein the branches have an average lateral dimension of about 0.5 to 5 mm. The filler of claim 1, wherein the stem length is less than or equal to the longitudinal length of the branch and stem structures. The filler according to claim 1, characterized in that the branches have an average length of 1 to 6 mm. 2. The filler according to claim 1, characterized in that the branches are formed by laterally dividing at intervals of an average of about 1 to 6 mm along the direction of the longitudinal length of the stem. 2. The filler according to claim 1, wherein the branches are formed by being divided at one end of the stem. The filler according to claim 1, wherein the branch and stem structures have a planar two-dimensional structure. 9. The filler according to claim 8, characterized in that the branch and stem structures have an average thickness of 0.25 to 2 mm. The filler according to claim 1, characterized in that the microporous polymer is selected from insulating materials. 11. The filler material according to claim 10, wherein the heat insulating materials are expanded plastics. 12. A filler according to claim 11, characterized in that the foamed plastics comprise foamed materials produced by selecting from the following materials: polyethylene, polyvinyl chloride, polystyrene or polyurethane. 13. A filler according to any one of claims 10 to 12, characterized in that the filler has water-wash resistance. A method for producing a filler,
Providing a microporous polymer sheet having a thickness of 0.25 to 2 mm,
Causing the sheet to enter into a pair of gear blade-bearing roller wheels rotating in opposite directions for cutting, and
And adjusting the gap between the two gear blade-supporting roller wheels to 0 to 1 mm to cut and form the sheet into branch and stem structures. 15. The method of claim 14, wherein the gear blade-supporting roller wheels have blades arranged at regular intervals along their axial lines and spirally distributed. 15. The method of claim 14, wherein the gear blade-supporting roller wheels have a linear velocity of about 100 to 300 mm / sec.

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